/**
 * Copyright (C) 2009, 2010 SC 4ViewSoft SRL
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.achartengine.chartdemo.demo.chart;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import org.achartengine.ChartFactory;
import org.achartengine.chart.PointStyle;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;

import android.content.Context;
import android.content.Intent;
import android.graphics.Color;

/**
 * Scatter demo chart.
 */
public class ScatterChart extends AbstractChart
{
	/**
	 * Returns the chart name.
	 * @return the chart name
	 */
	public String getName()
	{
		return "Scatter chart";
	}

	/**
	 * Returns the chart description.
	 * @return the chart description
	 */
	public String getDesc()
	{
		return "Randomly generated values for the scatter chart";
	}

	/**
	 * Executes the chart demo.
	 * @param context the context
	 * @return the built intent
	 */
	public Intent execute(Context context)
	{
		String[] titles = new String[] { "Series 1", "Series 2", "Series 3",
				"Series 4", "Series 5" };
		List<double[]> x = new ArrayList<double[]>();
		List<double[]> values = new ArrayList<double[]>();
		int count = 20;
		int length = titles.length;
		Random r = new Random();
		for (int i = 0; i < length; i++)
		{
			double[] xValues = new double[count];
			double[] yValues = new double[count];
			for (int k = 0; k < count; k++)
			{
				xValues[k] = k + r.nextInt() % 10;
				yValues[k] = k * 2 + r.nextInt() % 10;
			}
			x.add(xValues);
			values.add(yValues);
		}
		int[] colors = new int[] { Color.BLUE, Color.CYAN, Color.MAGENTA,
				Color.LTGRAY, Color.GREEN };
		PointStyle[] styles = new PointStyle[] { PointStyle.X,
				PointStyle.DIAMOND, PointStyle.TRIANGLE, PointStyle.SQUARE,
				PointStyle.CIRCLE };
		XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles);
		setChartSettings(renderer, "Scatter chart", "X", "Y", -10, 30, -10,
				51, Color.GRAY, Color.LTGRAY);
		renderer.setXLabels(10);
		renderer.setYLabels(10);
		length = renderer.getSeriesRendererCount();
		for (int i = 0; i < length; i++)
		{
			((XYSeriesRenderer) renderer.getSeriesRendererAt(i))
					.setFillPoints(true);
		}
		return ChartFactory.getScatterChartIntent(context, buildDataset(
				titles, x, values), renderer);
	}

}
